C1217

CIRCUIT DESCRIPTION
The pump motor is an integral part of the Brake Pressure Modulator Valve (BPMV), while the pump motor relay is integral to the Electronic Brake and Traction Control Module (EBTCM). The pump motor relay is not engaged during normal system operation. When an ABS/TCS/Active Handling (if equipped with RPO JL4) operation is required, the EBTCM activates the pump motor relay and battery power is provided to the pump motor.

CONDITIONS FOR SETTING THE DTC
Diagnostic Trouble Code (DTC) C1217 will set anytime the pump motor relay is commanded on and the pump relay voltage is less than 8 volts, and ignition voltage is greater than 10.5 volts.

ACTION TAKEN WHEN THE DTC SETS
ABS/TCS/Active Handling (if equipped with RPO JL4) are disabled.
^ Indicators that turn on:
- ABS indicator
- Car icon (TCS indicator)
^ Messages displayed on the Driver Information Center (DIC):
- Service ABS
- Service Traction System
- Service Active HNDLG (if equipped with Active Handling RPO JL4)

CONDITIONS FOR CLEARING THE DTC
^ Condition for Diagnostic Trouble Code (DTC) is no longer present and Scan tool clear DTC function is used.
^ Fifty ignition cycles have passed with no DTCs detected.

DIAGNOSTIC AIDS
^ It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
^ If an intermittent malfunction exists refer to Testing for Electrical Intermittents in Diagonstic Aids.

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
4. Checks for a short to ground in CKT 1642.
5. Checks for an internal short in the Brake Pressure Modulator Valve (BPMV).
8. Checks for an open in CKT 1642.





DTC C1217 Pump Motor Relay Contact Circuit Open